# 知序 AI / ZHIXU AI

> 知序 AI 聚合官方订阅地区价格、模型能力榜单、API 价格、Codex 重置雷达、卡网商品与中转服务，帮助你选择适合自己的 AI。

This is a Chinese-language AI decision and comparison platform. Pages are server-rendered and can be read without JavaScript. Public observations are linked to their original sources.

## Main resources

- [官方订阅](https://zhixuhub.com/subscriptions): Official subscriptions from Chinese and international products, plus regional Apple App Store monthly prices as a separate channel. ChatGPT is selected by default; use the product filter to see all. Quarterly and annual full payments are identified alongside monthly equivalents. Native CNY amounts are kept; paid Muse prices remain unpublished, so only its confirmed free tier is listed.
- [重置雷达](https://zhixuhub.com/resets): Codex public reset records, a 30-day calendar, and non-official 24/48-hour cumulative reset probabilities from codex-reset.com. Probabilities match the main display via /api/forecast probabilities.rounded_24h and rounded_48h; they are withheld when unavailable or stale, with no locally calculated fallback. Banked grants and unconfirmed announcements do not advance the latest confirmed reset. Event times use Beijing time; update delays are noted only when relevant. Source confirmation is distinct from individual account limits. Data: https://codex-reset.com/.
- [模型能力榜](https://zhixuhub.com/models): Original AA Intelligence Index and speed metrics. The default intelligence table excludes source-estimated indices; asterisks are retained on applicable detail records. Coding, reasoning and Agent tabs use LLM Stats public homepage samples; their scores are not blended.
- [API 模型价格](https://zhixuhub.com/api-prices): OpenRouter advertised base input/output prices in USD per million tokens; these are not direct-provider quotations.
- [卡网商品](https://zhixuhub.com/market): Public merchant offer titles, prices, specifications, inventory observations and original links.
- [API 中转目录](https://zhixuhub.com/gateways): Public model coverage and payment methods. Ranking is by coverage count. Reliability and latency remain unknown until measured.
- [用量与成本](https://zhixuhub.com/tools): Cost calculator using current public input/output prices.

## Reading observations correctly

Prices and scores retain their source units and original links. An unknown value is shown as an em dash. Public pages focus on prices, capabilities and conditions; routine collection timestamps and processing logs are omitted. Apple price verification confirms matching offer name, region, currency and amount; it does not establish undisclosed billing periods or purchase eligibility. App Store CNY equivalents use upstream conversion; web CNY prices retain the native amount, while other supported currencies use ECB/Frankfurter reference rates. Starting prices and per-seat conditions are retained. Model reasoning configurations are separate records. Base token prices do not represent complete task costs.

## Guides

- [官网、App Store、地区价，怎么选？](https://zhixuhub.com/guides/subscription-channels): 先分清购买渠道和付款周期，再看地区价格，避免把不同条件的报价放在一起。
- [选模型，先选场景，再看榜单。](https://zhixuhub.com/guides/choose-model): 理解综合能力、编程与推理指标，并把评测配置、速度和成本一起考虑。
- [固定订阅，还是 API 按量付费？](https://zhixuhub.com/guides/subscription-or-api): 分别理解聊天产品订阅和开发者 API，用自己的使用方式决定付费模式。
- [挑 API 接入，除了模型数量还看什么？](https://zhixuhub.com/guides/api-gateways): 理解官方接口、聚合平台和第三方中转，并明确模型覆盖、计费和可靠性的区别。
- [买账号、代充或额度，先对齐商品规格。](https://zhixuhub.com/guides/market-checklist): 区分成品号、代充、共享和按额度产品，理解看似相似商品的实际差别。
- [怎样读懂知序的数据与核验标记？](https://zhixuhub.com/guides/read-the-data): 理解价格口径、金额核验、缺失值和待更新标记。

## Machine-readable pages

- [Sitemap](https://zhixuhub.com/sitemap.xml): Canonical index of public detail pages.
- [完整指南文本](https://zhixuhub.com/llms-full.txt): All first-party editorial guides with source citations.

Use individual detail pages and the original source links when citing a specific price or score. Mention the channel, currency, unit and configuration as relevant; for reset announcements, include the event time.